<?php



/**

 * elFinder - file manager for web.

 * Core class.

 *

 * @package elfinder

 * @author Dmitry (dio) Levashov

 * @author Troex Nevelin

 * @author Alexey Sukhotin

 **/

class elFinder {

	

	/**

	 * API version number

	 *

	 * @var string

	 **/

	protected $version = '2.0';

	

	/**

	 * Storages (root dirs)

	 *

	 * @var array

	 **/

	protected $volumes = array();

	

	/**

	 * Mounted volumes count

	 * Required to create unique volume id

	 *

	 * @var int

	 **/

	public static $volumesCnt = 1;

	

	/**

	 * Default root (storage)

	 *

	 * @var elFinderStorageDriver

	 **/

	protected $default = null;

	

	/**

	 * Commands and required arguments list

	 *

	 * @var array

	 **/

	protected $commands = array(

		'open'      => array('target' => false, 'tree' => false, 'init' => false, 'mimes' => false),

		'ls'        => array('target' => true, 'mimes' => false),

		'tree'      => array('target' => true),

		'parents'   => array('target' => true),

		'tmb'       => array('targets' => true),

		'file'      => array('target' => true, 'download' => false),

		'size'      => array('targets' => true),

		'mkdir'     => array('target' => true, 'name' => true),

		'mkfile'    => array('target' => true, 'name' => true, 'mimes' => false),

		'rm'        => array('targets' => true),

		'rename'    => array('target' => true, 'name' => true, 'mimes' => false),

		'duplicate' => array('targets' => true, 'suffix' => false),

		'paste'     => array('dst' => true, 'targets' => true, 'cut' => false, 'mimes' => false),

		'upload'    => array('target' => true, 'FILES' => true, 'mimes' => false, 'html' => false),

		'get'       => array('target' => true),

		'put'       => array('target' => true, 'content' => '', 'mimes' => false),

		'archive'   => array('targets' => true, 'type' => true, 'mimes' => false),

		'extract'   => array('target' => true, 'mimes' => false),

		'search'    => array('q' => true, 'mimes' => false),

		'info'      => array('targets' => true),

		'dim'       => array('target' => true),

		'resize'    => array('target' => true, 'width' => true, 'height' => true, 'mode' => false, 'x' => false, 'y' => false, 'degree' => false)

	);

	

	/**

	 * Commands listeners

	 *

	 * @var array

	 **/

	protected $listeners = array();

	

	/**

	 * script work time for debug

	 *

	 * @var string

	 **/

	protected $time = 0;

	/**

	 * Is elFinder init correctly?

	 *

	 * @var bool

	 **/

	protected $loaded = false;

	/**

	 * Send debug to client?

	 *

	 * @var string

	 **/

	protected $debug = false;

	

	/**

	 * undocumented class variable

	 *

	 * @var string

	 **/

	protected $uploadDebug = '';

	

	/**

	 * Errors from not mounted volumes

	 *

	 * @var array

	 **/

	public $mountErrors = array();

	

	// Errors messages

	const ERROR_UNKNOWN           = 'errUnknown';

	const ERROR_UNKNOWN_CMD       = 'errUnknownCmd';

	const ERROR_CONF              = 'errConf';

	const ERROR_CONF_NO_JSON      = 'errJSON';

	const ERROR_CONF_NO_VOL       = 'errNoVolumes';

	const ERROR_INV_PARAMS        = 'errCmdParams';

	const ERROR_OPEN              = 'errOpen';

	const ERROR_DIR_NOT_FOUND     = 'errFolderNotFound';

	const ERROR_FILE_NOT_FOUND    = 'errFileNotFound';     // 'File not found.'

	const ERROR_TRGDIR_NOT_FOUND  = 'errTrgFolderNotFound'; // 'Target folder "$1" not found.'

	const ERROR_NOT_DIR           = 'errNotFolder';

	const ERROR_NOT_FILE          = 'errNotFile';

	const ERROR_PERM_DENIED       = 'errPerm';

	const ERROR_LOCKED            = 'errLocked';        // '"$1" is locked and can not be renamed, moved or removed.'

	const ERROR_EXISTS            = 'errExists';        // 'File named "$1" already exists.'

	const ERROR_INVALID_NAME      = 'errInvName';       // 'Invalid file name.'

	const ERROR_MKDIR             = 'errMkdir';

	const ERROR_MKFILE            = 'errMkfile';

	const ERROR_RENAME            = 'errRename';

	const ERROR_COPY              = 'errCopy';

	const ERROR_MOVE              = 'errMove';

	const ERROR_COPY_FROM         = 'errCopyFrom';

	const ERROR_COPY_TO           = 'errCopyTo';

	const ERROR_COPY_ITSELF       = 'errCopyInItself';

	const ERROR_REPLACE           = 'errReplace';          // 'Unable to replace "$1".'

	const ERROR_RM                = 'errRm';               // 'Unable to remove "$1".'

	const ERROR_RM_SRC            = 'errRmSrc';            // 'Unable remove source file(s)'

	const ERROR_UPLOAD            = 'errUpload';           // 'Upload error.'

	const ERROR_UPLOAD_FILE       = 'errUploadFile';       // 'Unable to upload "$1".'

	const ERROR_UPLOAD_NO_FILES   = 'errUploadNoFiles';    // 'No files found for upload.'

	const ERROR_UPLOAD_TOTAL_SIZE = 'errUploadTotalSize';  // 'Data exceeds the maximum allowed size.'

	const ERROR_UPLOAD_FILE_SIZE  = 'errUploadFileSize';   // 'File exceeds maximum allowed size.'

	const ERROR_UPLOAD_FILE_MIME  = 'errUploadMime';       // 'File type not allowed.'

	const ERROR_UPLOAD_TRANSFER   = 'errUploadTransfer';   // '"$1" transfer error.'

	// const ERROR_ACCESS_DENIED     = 'errAccess';

	const ERROR_NOT_REPLACE       = 'errNotReplace';       // Object "$1" already exists at this location and can not be replaced with object of another type.

	const ERROR_SAVE              = 'errSave';

	const ERROR_EXTRACT           = 'errExtract';

	const ERROR_ARCHIVE           = 'errArchive';

	const ERROR_NOT_ARCHIVE       = 'errNoArchive';

	const ERROR_ARCHIVE_TYPE      = 'errArcType';

	const ERROR_ARC_SYMLINKS      = 'errArcSymlinks';

	const ERROR_ARC_MAXSIZE       = 'errArcMaxSize';

	const ERROR_RESIZE            = 'errResize';

	const ERROR_UNSUPPORT_TYPE    = 'errUsupportType';

	const ERROR_NOT_UTF8_CONTENT  = 'errNotUTF8Content';

	

	/**

	 * Constructor

	 *

	 * @param  array  elFinder and roots configurations

	 * @return void

	 * @author Dmitry (dio) Levashov

	 **/

	public function __construct($opts) {

		

		$this->time  = $this->utime();

		$this->debug = (isset($opts['debug']) && $opts['debug'] ? true : false);

		

		setlocale(LC_ALL, !empty($opts['locale']) ? $opts['locale'] : 'en_US.UTF-8');



		// bind events listeners

		if (!empty($opts['bind']) && is_array($opts['bind'])) {

			foreach ($opts['bind'] as $cmd => $handler) {

				$this->bind($cmd, $handler);

			}

		}



		// "mount" volumes

		if (isset($opts['roots']) && is_array($opts['roots'])) {

			

			foreach ($opts['roots'] as $i => $o) {

				$class = 'elFinderVolume'.(isset($o['driver']) ? $o['driver'] : '');



				if (class_exists($class)) {

					$volume = new $class();



					if ($volume->mount($o)) {

						// unique volume id (ends on "_") - used as prefix to files hash

						$id = $volume->id();

						

						$this->volumes[$id] = $volume;

						if (!$this->default && $volume->isReadable()) {

							$this->default = $this->volumes[$id]; 

						}

					} else {

						$this->mountErrors[] = 'Driver "'.$class.'" : '.implode(' ', $volume->error());

					}

				} else {

					$this->mountErrors[] = 'Driver "'.$class.'" does not exists';

				}

			}

		}

		// if at least one redable volume - ii desu >_<

		$this->loaded = !empty($this->default);

	}

	

	/**

	 * Return true if fm init correctly

	 *

	 * @return bool

	 * @author Dmitry (dio) Levashov

	 **/

	public function loaded() {

		return $this->loaded;

	}

	

	/**

	 * Return version (api) number

	 *

	 * @return string

	 * @author Dmitry (dio) Levashov

	 **/

	public function version() {

		return $this->version;

	}

	

	/**

	 * Add handler to elFinder command

	 *

	 * @param  string  command name

	 * @param  string|array  callback name or array(object, method)

	 * @return elFinder

	 * @author Dmitry (dio) Levashov

	 **/

	public function bind($cmd, $handler) {

		$cmds = array_map('trim', explode(' ', $cmd));

		

		foreach ($cmds as $cmd) {

			if ($cmd) {

				if (!isset($this->listeners[$cmd])) {

					$this->listeners[$cmd] = array();

				}



				if ((is_array($handler) && count($handler) == 2 && is_object($handler[0]) && method_exists($handler[0], $handler[1]))

				|| function_exists($handler)) {

					$this->listeners[$cmd][] = $handler;

				}

			}

		}



		return $this;

	}

	

	/**

	 * Remove event (command exec) handler

	 *

	 * @param  string  command name

	 * @param  string|array  callback name or array(object, method)

	 * @return elFinder

	 * @author Dmitry (dio) Levashov

	 **/

	public function unbind($cmd, $handler) {

		if (!empty($this->listeners[$cmd])) {

			foreach ($this->listeners[$cmd] as $i => $h) {

				if ($h === $handler) {

					unset($this->listeners[$cmd][$i]);

					return $this;

				}

			}

		}

		return $this;

	}

	

	/**

	 * Return true if command exists

	 *

	 * @param  string  command name

	 * @return bool

	 * @author Dmitry (dio) Levashov

	 **/

	public function commandExists($cmd) {

		return $this->loaded && isset($this->commands[$cmd]) && method_exists($this, $cmd);

	}

	

	/**

	 * Return command required arguments info

	 *

	 * @param  string  command name

	 * @return array

	 * @author Dmitry (dio) Levashov

	 **/

	public function commandArgsList($cmd) {

		return $this->commandExists($cmd) ? $this->commands[$cmd] : array();

	}

	

	/**

	 * Exec command and return result

	 *

	 * @param  string  $cmd  command name

	 * @param  array   $args command arguments

	 * @return array

	 * @author Dmitry (dio) Levashov

	 **/

	public function exec($cmd, $args) {

		

		if (!$this->loaded) {

			return array('error' => $this->error(self::ERROR_CONF, self::ERROR_CONF_NO_VOL));

		}

		

		if (!$this->commandExists($cmd)) {

			return array('error' => $this->error(self::ERROR_UNKNOWN_CMD));

		}

		

		if (!empty($args['mimes']) && is_array($args['mimes'])) {

			foreach ($this->volumes as $id => $v) {

				$this->volumes[$id]->setMimesFilter($args['mimes']);

			}

		}

		

		$result = $this->$cmd($args);

		

		if (isset($result['removed'])) {

			foreach ($this->volumes as $volume) {

				$result['removed'] = array_merge($result['removed'], $volume->removed());

				$volume->resetRemoved();

			}

		}

		

		// call handlers for this command

		if (!empty($this->listeners[$cmd])) {

			foreach ($this->listeners[$cmd] as $handler) {

				if ((is_array($handler) && $handler[0]->{$handler[1]}($cmd, $result, $args, $this))

				||  (!is_array($handler) && $handler($cmd, $result, $args, $this))) {

					// handler return true to force sync client after command completed

					$result['sync'] = true;

				}

			}

		}

		

		// replace removed files info with removed files hashes

		if (!empty($result['removed'])) {

			$removed = array();

			foreach ($result['removed'] as $file) {

				$removed[] = $file['hash'];

			}

			$result['removed'] = array_unique($removed);

		}

		// remove hidden files and filter files by mimetypes

		if (!empty($result['added'])) {

			$result['added'] = $this->filter($result['added']);

		}

		// remove hidden files and filter files by mimetypes

		if (!empty($result['changed'])) {

			$result['changed'] = $this->filter($result['changed']);

		}

		

		if ($this->debug || !empty($args['debug'])) {

			$result['debug'] = array(

				'connector' => 'php', 

				'phpver'    => PHP_VERSION,

				'time'      => $this->utime() - $this->time,

				'memory'    => (function_exists('memory_get_peak_usage') ? ceil(memory_get_peak_usage()/1024).'Kb / ' : '').ceil(memory_get_usage()/1024).'Kb / '.ini_get('memory_limit'),

				'upload'    => $this->uploadDebug,

				'volumes'   => array(),

				'mountErrors' => $this->mountErrors

				);

			

			foreach ($this->volumes as $id => $volume) {

				$result['debug']['volumes'][] = $volume->debug();

			}

		}

		

		foreach ($this->volumes as $volume) {

			$volume->umount();

		}

		

		return $result;

	}

	

	/**

	 * Return file real path

	 *

	 * @param  string  $hash  file hash

	 * @return string

	 * @author Dmitry (dio) Levashov

	 **/

	public function realpath($hash)	{

		if (($volume = $this->volume($hash)) == false) {

			return false;

		}

		return $volume->realpath($hash);

	}

	

	/***************************************************************************/

	/*                                 commands                                */

	/***************************************************************************/

	

	/**

	 * Normalize error messages

	 *

	 * @return array

	 * @author Dmitry (dio) Levashov

	 **/

	public function error() {

		$errors = array();



		foreach (func_get_args() as $msg) {

			if (is_array($msg)) {

				$errors = array_merge($errors, $msg);

			} else {

				$errors[] = $msg;

			}

		}

		

		return count($errors) ? $errors : array(self::ERROR_UNKNOWN);

	}

	

	/**

	 * "Open" directory

	 * Return array with following elements

	 *  - cwd          - opened dir info

	 *  - files        - opened dir content [and dirs tree if $args[tree]]

	 *  - api          - api version (if $args[init])

	 *  - uplMaxSize   - if $args[init]

	 *  - error        - on failed

	 *

	 * @param  array  command arguments

	 * @return array

	 * @author Dmitry (dio) Levashov

	 **/

	protected function open($args) {

		$target = $args['target'];

		$init   = !empty($args['init']);

		$tree   = !empty($args['tree']);

		$volume = $this->volume($target);

		$cwd    = $volume ? $volume->dir($target, true) : false;

		$hash   = $init ? 'default folder' : '#'.$target;



		// on init request we can get invalid dir hash -

		// dir which can not be opened now, but remembered by client,

		// so open default dir

		if ((!$cwd || !$cwd['read']) && $init) {

			$volume = $this->default;

			$cwd    = $volume->dir($volume->defaultPath(), true);

		}

		

		if (!$cwd) {

			return array('error' => $this->error(self::ERROR_OPEN, $hash, self::ERROR_DIR_NOT_FOUND));

		}

		if (!$cwd['read']) {

			return array('error' => $this->error(self::ERROR_OPEN, $hash, self::ERROR_PERM_DENIED));

		}



		$files = array();



		// get folders trees

		if ($args['tree']) {

			foreach ($this->volumes as $id => $v) {



				if (($tree = $v->tree('', 0, $cwd['hash'])) != false) {

					$files = array_merge($files, $tree);

				}

			}

		}



		// get current working directory files list and add to $files if not exists in it

		if (($ls = $volume->scandir($cwd['hash'])) === false) {

			return array('error' => $this->error(self::ERROR_OPEN, $cwd['name'], $volume->error()));

		}

		

		foreach ($ls as $file) {

			if (!in_array($file, $files)) {

				$files[] = $file;

			}

		}

		

		$result = array(

			'cwd'     => $cwd,

			'options' => $volume->options($cwd['hash']),

			'files'   => $files

		);



		if (!empty($args['init'])) {

			$result['api'] = $this->version;

			$result['uplMaxSize'] = ini_get('upload_max_filesize');

		}

		

		return $result;

	}

	

	/**

	 * Return dir files names list

	 *

	 * @param  array  command arguments

	 * @return array

	 * @author Dmitry (dio) Levashov

	 **/

	protected function ls($args) {

		$target = $args['target'];

		

		if (($volume = $this->volume($target)) == false

		|| ($list = $volume->ls($target)) === false) {

			return array('error' => $this->error(self::ERROR_OPEN, '#'.$target));

		}

		return array('list' => $list);

	}

	

	/**

	 * Return subdirs for required directory

	 *

	 * @param  array  command arguments

	 * @return array

	 * @author Dmitry (dio) Levashov

	 **/

	protected function tree($args) {

		$target = $args['target'];

		

		if (($volume = $this->volume($target)) == false

		|| ($tree = $volume->tree($target)) == false) {

			return array('error' => $this->error(self::ERROR_OPEN, '#'.$target));

		}



		return array('tree' => $tree);

	}

	

	/**

	 * Return parents dir for required directory

	 *

	 * @param  array  command arguments

	 * @return array

	 * @author Dmitry (dio) Levashov

	 **/

	protected function parents($args) {

		$target = $args['target'];

		

		if (($volume = $this->volume($target)) == false

		|| ($tree = $volume->parents($target)) == false) {

			return array('error' => $this->error(self::ERROR_OPEN, '#'.$target));

		}



		return array('tree' => $tree);

	}

	

	/**

	 * Return new created thumbnails list

	 *

	 * @param  array  command arguments

	 * @return array

	 * @author Dmitry (dio) Levashov

	 **/

	protected function tmb($args) {

		

		$result  = array('images' => array());

		$targets = $args['targets'];

		

		foreach ($targets as $target) {

			if (($volume = $this->volume($target)) != false

			&& (($tmb = $volume->tmb($target)) != false)) {

				$result['images'][$target] = $tmb;

			}

		}

		return $result;

	}

	

	/**

	 * Required to output file in browser when volume URL is not set 

	 * Return array contains opened file pointer, root itself and required headers

	 *

	 * @param  array  command arguments

	 * @return array

	 * @author Dmitry (dio) Levashov

	 **/

	protected function file($args) {

		$target   = $args['target'];

		$download = !empty($args['download']);

		$h403     = 'HTTP/1.x 403 Access Denied';

		$h404     = 'HTTP/1.x 404 Not Found';



		if (($volume = $this->volume($target)) == false) { 

			return array('error' => 'File not found', 'header' => $h404, 'raw' => true);

		}

		

		if (($file = $volume->file($target)) == false) {

			return array('error' => 'File not found', 'header' => $h404, 'raw' => true);

		}

		

		if (!$file['read']) {

			return array('error' => 'Access denied', 'header' => $h403, 'raw' => true);

		}

		

		if (($fp = $volume->open($target)) == false) {

			return array('error' => 'File not found', 'header' => $h404, 'raw' => true);

		}



		if ($download) {

			$disp = 'attachment';

			$mime = 'application/octet-stream';

		} else {

			$disp  = preg_match('/^(image|text)/i', $file['mime']) || $file['mime'] == 'application/x-shockwave-flash' 

					? 'inline' 

					: 'attachment';

			$mime = $file['mime'];

		}

		

		$filenameEncoded = rawurlencode($file['name']);

		if (strpos($filenameEncoded, '%') === false) { // ASCII only

			$filename = 'filename="'.$file['name'].'"';

		} else {

			$ua = $_SERVER["HTTP_USER_AGENT"];

			if (preg_match('/MSIE [4-8]/', $ua)) { // IE < 9 do not support RFC 6266 (RFC 2231/RFC 5987)

				$filename = 'filename="'.$filenameEncoded.'"';

			} else { // RFC 6266 (RFC 2231/RFC 5987)

				$filename = 'filename*=UTF-8\'\''.$filenameEncoded;

			}

		}

		

		$result = array(

			'volume'  => $volume,

			'pointer' => $fp,

			'info'    => $file,

			'header'  => array(

				'Content-Type: '.$mime, 

				'Content-Disposition: '.$disp.'; '.$filename,

				'Content-Location: '.$file['name'],

				'Content-Transfer-Encoding: binary',

				'Content-Length: '.$file['size'],

				'Connection: close'

			)

		);

		return $result;

	}

	

	/**

	 * Count total files size

	 *

	 * @param  array  command arguments

	 * @return array

	 * @author Dmitry (dio) Levashov

	 **/

	protected function size($args) {

		$size = 0;

		

		foreach ($args['targets'] as $target) {

			if (($volume = $this->volume($target)) == false

			|| ($file = $volume->file($target)) == false

			|| !$file['read']) {

				return array('error' => $this->error(self::ERROR_OPEN, '#'.$target));

			}

			

			$size += $volume->size($target);

		}

		return array('size' => $size);

	}

	

	/**

	 * Create directory

	 *

	 * @param  array  command arguments

	 * @return array

	 * @author Dmitry (dio) Levashov

	 **/

	protected function mkdir($args) {

		$target = $args['target'];

		$name   = $args['name'];

		

		if (($volume = $this->volume($target)) == false) {

			return array('error' => $this->error(self::ERROR_MKDIR, $name, self::ERROR_TRGDIR_NOT_FOUND, '#'.$target));

		}



		return ($dir = $volume->mkdir($target, $name)) == false

			? array('error' => $this->error(self::ERROR_MKDIR, $name, $volume->error()))

			: array('added' => array($dir));

	}

	

	/**

	 * Create empty file

	 *

	 * @param  array  command arguments

	 * @return array

	 * @author Dmitry (dio) Levashov

	 **/

	protected function mkfile($args) {

		$target = $args['target'];

		$name   = $args['name'];

		

		if (($volume = $this->volume($target)) == false) {

			return array('error' => $this->error(self::ERROR_MKFILE, $name, self::ERROR_TRGDIR_NOT_FOUND, '#'.$target));

		}



		return ($file = $volume->mkfile($target, $args['name'])) == false

			? array('error' => $this->error(self::ERROR_MKFILE, $name, $volume->error()))

			: array('added' => array($file));

	}

	

	/**

	 * Rename file

	 *

	 * @param  array  $args

	 * @return array

	 * @author Dmitry (dio) Levashov

	 **/

	protected function rename($args) {

		$target = $args['target'];

		$name   = $args['name'];

		

		if (($volume = $this->volume($target)) == false

		||  ($rm  = $volume->file($target)) == false) {

			return array('error' => $this->error(self::ERROR_RENAME, '#'.$target, self::ERROR_FILE_NOT_FOUND));

		}

		$rm['realpath'] = $volume->realpath($target);

		

		return ($file = $volume->rename($target, $name)) == false

			? array('error' => $this->error(self::ERROR_RENAME, $rm['name'], $volume->error()))

			: array('added' => array($file), 'removed' => array($rm));

	}

	

	/**

	 * Duplicate file - create copy with "copy %d" suffix

	 *

	 * @param array  $args  command arguments

	 * @return array

	 * @author Dmitry (dio) Levashov

	 **/

	protected function duplicate($args) {

		$targets = is_array($args['targets']) ? $args['targets'] : array();

		$result  = array('added' => array());

		$suffix  = empty($args['suffix']) ? 'copy' : $args['suffix'];

		

		foreach ($targets as $target) {

			if (($volume = $this->volume($target)) == false

			|| ($src = $volume->file($target)) == false) {

				$result['warning'] = $this->error(self::ERROR_COPY, '#'.$target, self::ERROR_FILE_NOT_FOUND);

				break;

			}

			

			if (($file = $volume->duplicate($target, $suffix)) == false) {

				$result['warning'] = $this->error($volume->error());

				break;

			}

			

			$result['added'][] = $file;

		}

		

		return $result;

	}

		

	/**

	 * Remove dirs/files

	 *

	 * @param array  command arguments

	 * @return array

	 * @author Dmitry (dio) Levashov

	 **/

	protected function rm($args) {

		$targets = is_array($args['targets']) ? $args['targets'] : array();

		$result  = array('removed' => array());

		

		foreach ($targets as $target) {

			if (($volume = $this->volume($target)) == false) {

				$result['warning'] = $this->error(self::ERROR_RM, '#'.$target, self::ERROR_FILE_NOT_FOUND);

				return $result;

			}

			if (!$volume->rm($target)) {

				$result['warning'] = $this->error($volume->error());

				return $result;

			}

		}



		return $result;

	}

	

	/**

	 * Save uploaded files

	 *

	 * @param  array

	 * @return array

	 * @author Dmitry (dio) Levashov

	 **/

	protected function upload($args) {

		$target = $args['target'];

		$volume = $this->volume($target);

		$files  = isset($args['FILES']['upload']) && is_array($args['FILES']['upload']) ? $args['FILES']['upload'] : array();

		$result = array('added' => array(), 'header' => empty($args['html']) ? false : 'Content-Type: text/html; charset=utf-8');

		

		if (empty($files)) {

			return array('error' => $this->error(self::ERROR_UPLOAD, self::ERROR_UPLOAD_NO_FILES), 'header' => $header);

		}

		

		if (!$volume) {

			return array('error' => $this->error(self::ERROR_UPLOAD, self::ERROR_TRGDIR_NOT_FOUND, '#'.$target), 'header' => $header);

		}

		

		foreach ($files['name'] as $i => $name) {

			if (($error = $files['error'][$i]) > 0) {				

				$result['warning'] = $this->error(self::ERROR_UPLOAD_FILE, $name, $error == UPLOAD_ERR_INI_SIZE || $error == UPLOAD_ERR_FORM_SIZE ? self::ERROR_UPLOAD_FILE_SIZE : self::ERROR_UPLOAD_TRANSFER);

				$this->uploadDebug = 'Upload error code: '.$error;

				break;

			}

			

			$tmpname = $files['tmp_name'][$i];

			

			if (($fp = fopen($tmpname, 'rb')) == false) {

				$result['warning'] = $this->error(self::ERROR_UPLOAD_FILE, $name, self::ERROR_UPLOAD_TRANSFER);

				$this->uploadDebug = 'Upload error: unable open tmp file';

				break;

			}

			

			if (($file = $volume->upload($fp, $target, $name, $tmpname)) === false) {

				$result['warning'] = $this->error(self::ERROR_UPLOAD_FILE, $name, $volume->error());

				fclose($fp);

				break;

			}

			

			fclose($fp);

			$result['added'][] = $file;

		}

		

		return $result;

	}

		

	/**

	 * Copy/move files into new destination

	 *

	 * @param  array  command arguments

	 * @return array

	 * @author Dmitry (dio) Levashov

	 **/

	protected function paste($args) {

		$dst     = $args['dst'];

		$targets = is_array($args['targets']) ? $args['targets'] : array();

		$cut     = !empty($args['cut']);

		$error   = $cut ? self::ERROR_MOVE : self::ERROR_COPY;

		$result  = array('added' => array(), 'removed' => array());

		

		if (($dstVolume = $this->volume($dst)) == false) {

			return array('error' => $this->error($error, '#'.$targets[0], self::ERROR_TRGDIR_NOT_FOUND, '#'.$dst));

		}

		

		foreach ($targets as $target) {

			if (($srcVolume = $this->volume($target)) == false) {

				$result['warning'] = $this->error($error, '#'.$target, self::ERROR_FILE_NOT_FOUND);

				break;

			}

			

			if (($file = $dstVolume->paste($srcVolume, $target, $dst, $cut)) == false) {

				$result['warning'] = $this->error($dstVolume->error());

				break;

			}

			

			$result['added'][] = $file;

		}

		return $result;

	}

	

	/**

	 * Return file content

	 *

	 * @param  array  $args  command arguments

	 * @return array

	 * @author Dmitry (dio) Levashov

	 **/

	protected function get($args) {

		$target = $args['target'];

		$volume = $this->volume($target);

		

		if (!$volume || ($file = $volume->file($target)) == false) {

			return array('error' => $this->error(self::ERROR_OPEN, '#'.$target, self::ERROR_FILE_NOT_FOUND));

		}

		

		if (($content = $volume->getContents($target)) === false) {

			return array('error' => $this->error(self::ERROR_OPEN, $volume->path($target), $volume->error()));

		}

		

		$json = json_encode($content);



		if ($json == 'null' && strlen($json) < strlen($content)) {

			return array('error' => $this->error(self::ERROR_NOT_UTF8_CONTENT, $volume->path($target)));

		}

		

		return array('content' => $content);

	}

	

	/**

	 * Save content into text file

	 *

	 * @return array

	 * @author Dmitry (dio) Levashov

	 **/

	protected function put($args) {

		$target = $args['target'];

		

		if (($volume = $this->volume($target)) == false

		|| ($file = $volume->file($target)) == false) {

			return array('error' => $this->error(self::ERROR_SAVE, '#'.$target, self::ERROR_FILE_NOT_FOUND));

		}

		

		if (($file = $volume->putContents($target, $args['content'])) == false) {

			return array('error' => $this->error(self::ERROR_SAVE, $volume->path($target), $volume->error()));

		}

		

		return array('changed' => array($file));

	}



	/**

	 * Extract files from archive

	 *

	 * @param  array  $args  command arguments

	 * @return array

	 * @author Dmitry (dio) Levashov, 

	 * @author Alexey Sukhotin

	 **/

	protected function extract($args) {

		$target = $args['target'];

		$mimes  = !empty($args['mimes']) && is_array($args['mimes']) ? $args['mimes'] : array();

		$error  = array(self::ERROR_EXTRACT, '#'.$target);



		if (($volume = $this->volume($target)) == false

		|| ($file = $volume->file($target)) == false) {

			return array('error' => $this->error(self::ERROR_EXTRACT, '#'.$target, self::ERROR_FILE_NOT_FOUND));

		}  



		return ($file = $volume->extract($target))

			? array('added' => array($file))

			: array('error' => $this->error(self::ERROR_EXTRACT, $volume->path($target), $volume->error()));

	}

	

	/**

	 * Create archive

	 *

	 * @param  array  $args  command arguments

	 * @return array

	 * @author Dmitry (dio) Levashov, 

	 * @author Alexey Sukhotin

	 **/

	protected function archive($args) {

		$type    = $args['type'];

		$targets = isset($args['targets']) && is_array($args['targets']) ? $args['targets'] : array();

	

		if (($volume = $this->volume($targets[0])) == false) {

			return $this->error(self::ERROR_ARCHIVE, self::ERROR_TRGDIR_NOT_FOUND);

		}

	

		return ($file = $volume->archive($targets, $args['type']))

			? array('added' => array($file))

			: array('error' => $this->error(self::ERROR_ARCHIVE, $volume->error()));

	}

	

	/**

	 * Search files

	 *

	 * @param  array  $args  command arguments

	 * @return array

	 * @author Dmitry Levashov

	 **/

	protected function search($args) {

		$q      = trim($args['q']);

		$mimes  = !empty($args['mimes']) && is_array($args['mimes']) ? $args['mimes'] : array();

		$result = array();



		foreach ($this->volumes as $volume) {

			$result = array_merge($result, $volume->search($q, $mimes));

		}

		

		return array('files' => $result);

	}

	

	/**

	 * Return file info (used by client "places" ui)

	 *

	 * @param  array  $args  command arguments

	 * @return array

	 * @author Dmitry Levashov

	 **/

	protected function info($args) {

		$files = array();

		

		foreach ($args['targets'] as $hash) {

			if (($volume = $this->volume($hash)) != false

			&& ($info = $volume->file($hash)) != false) {

				$files[] = $info;

			}

		}

		

		return array('files' => $files);

	}

	

	/**

	 * Return image dimmensions

	 *

	 * @param  array  $args  command arguments

	 * @return array

	 * @author Dmitry (dio) Levashov

	 **/

	protected function dim($args) {

		$target = $args['target'];

		

		if (($volume = $this->volume($target)) != false) {

			$dim = $volume->dimensions($target);

			return $dim ? array('dim' => $dim) : array();

		}

		return array();

	}

	

	/**

	 * Resize image

	 *

	 * @param  array  command arguments

	 * @return array

	 * @author Dmitry (dio) Levashov

	 * @author Alexey Sukhotin

	 **/

	protected function resize($args) {

		$target = $args['target'];

		$width  = $args['width'];

		$height = $args['height'];

		$x      = (int)$args['x'];

		$y      = (int)$args['y'];

		$mode   = $args['mode'];

		$bg     = null;

		$degree = (int)$args['degree'];

		

		if (($volume = $this->volume($target)) == false

		|| ($file = $volume->file($target)) == false) {

			return array('error' => $this->error(self::ERROR_RESIZE, '#'.$target, self::ERROR_FILE_NOT_FOUND));

		}



		return ($file = $volume->resize($target, $width, $height, $x, $y, $mode, $bg, $degree))

			? array('changed' => array($file))

			: array('error' => $this->error(self::ERROR_RESIZE, $volume->path($target), $volume->error()));

	}

	

	/***************************************************************************/

	/*                                   utils                                 */

	/***************************************************************************/

	

	/**

	 * Return root - file's owner

	 *

	 * @param  string  file hash

	 * @return elFinderStorageDriver

	 * @author Dmitry (dio) Levashov

	 **/

	protected function volume($hash) {

		foreach ($this->volumes as $id => $v) {

			if (strpos(''.$hash, $id) === 0) {

				return $this->volumes[$id];

			} 

		}

		return false;

	}

	

	/**

	 * Return files info array 

	 *

	 * @param  array  $data  one file info or files info

	 * @return array

	 * @author Dmitry (dio) Levashov

	 **/

	protected function toArray($data) {

		return isset($data['hash']) || !is_array($data) ? array($data) : $data;

	}

	

	/**

	 * Return fils hashes list

	 *

	 * @param  array  $files  files info

	 * @return array

	 * @author Dmitry (dio) Levashov

	 **/

	protected function hashes($files) {

		$ret = array();

		foreach ($files as $file) {

			$ret[] = $file['hash'];

		}

		return $ret;

	}

	

	/**

	 * Remove from files list hidden files and files with required mime types

	 *

	 * @param  array  $files  files info

	 * @return array

	 * @author Dmitry (dio) Levashov

	 **/

	protected function filter($files) {

		foreach ($files as $i => $file) {

			if (!empty($file['hidden']) || !$this->default->mimeAccepted($file['mime'])) {

				unset($files[$i]);

			}

		}

		return array_merge($files, array());

	}

	

	protected function utime() {

		$time = explode(" ", microtime());

		return (double)$time[1] + (double)$time[0];

	}

	

} // END class

